US Bridges

FAP-332 (ILL-1/14) over Mchenry Slough

Good

White County, Illinois · 2 MI N Carmi · Structure no. 097007800000000

Built
2014
11 years old
Condition
Good
inspected September 2024
Type
Slab
Concrete Continuous
Length
154 ft
6 main spans
Daily traffic
4,100
2023 count
Owner
State
State Highway Agency

About this bridge

FAP-332 (ILL-1/14) over Mchenry Slough is a concrete continuous slab carrying FAP-332 (ILL-1/14) over Mchenry Slough in White County, Illinois. It was built in 2014, so it is 11 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,100 vehicles a day, roughly 11% of them trucks, projected to reach 4,141 by 2046. The structure is 154 ft (46.9 m) long and 43 ft wide. If it were closed, the detour would be 60.3 mi (97 km).

CarriesFAP-332 (ILL-1/14)
CrossesMchenry Slough
Location2 MI N Carmi
RouteState Highway 1
Coordinates38.10904, -88.12358
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 25 or greater
Structure length154 ft (46.9 m)
Longest span25 ft (7.5 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,100 (2023)
Projected traffic4,141 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.3 mi (97 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FAP-332 (ILL-1/14) over Mchenry Slough built?

It was built in 2014, making it 11 years old in 2025.

What condition is FAP-332 (ILL-1/14) over Mchenry Slough in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does FAP-332 (ILL-1/14) over Mchenry Slough carry?

About 4,100 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is FAP-332 (ILL-1/14) over Mchenry Slough?

The structure is 154 ft (46.9 m) long with a longest span of 25 ft (7.5 m) and a deck 43 ft wide.

Who owns FAP-332 (ILL-1/14) over Mchenry Slough?

It is owned by the State Highway Agency.